Question

x+1/x=3 x²+1/x2 find x​

Answer 1

Answer:

x+1/x=3

(x+1/x)^2=(3)^2

=> x^2+2.x.1/x+1/x^2=9

=> x^2+1/x^2+2=9

=> x^2+1/x^2=9-2

=> x^2+1/x^2=7